For decades, some of the world’s most powerful people have meet in secret to discuss global political and economic affairs.

The Bilderberg Group is an unofficial conference of around 150 invitation-only guests who are insiders in politics, banking, business, the military and the media. The group’s meetings are held in secret and are closed to the public. The current conference is being held at a hotel in Sitges, Spain under heavy security.

The conference has drawn in a dedicated group of protestors and journalists attempting to cover the event, but police and security guards have harassed and detained many of them.

“It’s a four day meeting with the most rich and powerful people in the world. The heads of banks and the Chairman of Barclays is there, Bill Gates is coming this year. Larry Summers is there. We think Timothy Geithner is there. They’re not irrelevant people. This is a very very serious meeting,” said Charlie Skelton, a journalist with The Guardian who is reporting on the meeting from outside the conference in Sitges.

Skelton said that some leaks have revealed further details on the meeting’s agenda.

“I hear from some people, Daniel Estulin has got sources inside, and he says the euro is on the top of the agenda. If the euro fails and the eurozone collapses, it’s been a lot of wasted talk. There’s talk, I have been speaking to some Spaniards here and they saying there’s whispers of returning to the peseta and that is not in the Bilderberg’s best interest,” said Skelton.